Around 2010 or earlier, my sister received an old Gelgoog Commander Type 1/100 scale model kit. It was given to her by my uncle after he picked it up during a trip to japan. I have not been able to find any information on it outside of an image of the box art on the wiki. I believe it was credited as being from 1981, but I can't find anything else.
A wierd thing I noticed was that some specific parts aren;t colored as shown in the instructions or on the box, but that may just be attributed to the grade, nor do most of the pieces snap together, and I can't seem to build it because of that.
Everything is together, but all of the parts have been removed from the runners and the box has become a little mashed from storage. I have been completely unsucessful in constructing it. I can give more pictures if needed. Any information on it would be greatly appreciated.
Searching the information you gave in Google, I turned up a few sites selling this model kit. This was the most deteailed one: (https://myanimeshelf.com/figures/1678495_1:100_Scale_MS-14S_(YMS-14)_Gelgoog_Commander_Type) It looks like it was pretty low quality in general. One of the sites took a picture of the runners, and they are all the same red/pink color as yours on all parts, so apparently this model was intended to be painted. I don't speak or read Japanese other than katakana, so I do not understand the words in the instructions. Regardless, I still think it's a pretty cool thing to have turn up.